Khan of Kalat or Khan-e-Qalat ( Urdu: خان قلات) is the title of former rulers of State of Kalat. Kalat state is now part of Balochistan, Pakistan. The rulers in Kalat were always subject to the political authority of a larger state, after the Mongol invasion they were subject to the Mughal emperors in Delhi, then to the rulers in Kandahar, after 1839 to the British, and finally to the Pakistan government.

The rulers of Kalat held the title of Vali originally but in 1739 also took the title (Begler Begi) Khan usually shortened to Khan. The last Khan of Kalat had the privilege of being the President of the Council of Rulers for the Baluchistan States Union. The origins of the Brahui speaking tribes are uncertain, but their language indicates they are a Northern Dravidian people whose language has been modified by residence in the proximity of largely Iranian peoples, most notably the Baloch with whom the Brahui have been greatly mixed. The Brahui people had already long been resident in the Kalat area when the Balochi speaking tribes arrived from the west. The Balochis established a large kingdom in the 15th century, but it soon declined and the region fell to Afghan and Iranian invaders. The Brahui Khans of Kalat were dominant from the 16th century onwards until the arrival of the British in the 19th century. A treaty was signed in 1876 to make Kalat part of the British Empire. In 1947, Kalat became part of Pakistan when the British withdrew.